Trying to get the motor ready for primer and I'm having trouble with it flashing with rust after I clean it. I've been using mineral spirits with a brass bristle brush followed by Brake kleen and its flashing mostly around the exhaust flanges where it had developed some light surface rust. What can I use to stop the flash and that can be primed over without removing? Metal prep? Evaporust?
? As a side note, our humidity is pretty low right now but its 102 degrees. Its supposed to be in the low to mid 70's tomorrow morning which is when I plan on spraying the primer.